My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6722UTVHD3
- Part No.:
- MAX6722UTVHD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6722UTVHD3.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,085
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6722UTVHD3 from Maxim Integrated is a dual-voltage microprocessor supervisory IC that monitors primary (VCC1) and secondary (VCC2) supply rails, asserting an active-low push-pull reset output when either falls below factory-trimmed thresholds - VTH1 = 3.075 V (typ), VTH2 = 1.388 V (typ) - with a 210 ms (min) reset timeout period. It operates from -40°C to +125°C in a 6-pin SOT23 package and supports manual reset, watchdog timer disable, and guaranteed reset validity down to VCC1 or VCC2 = 0.8 V. Used in telecom power management and industrial embedded controllers.
For engineers reviewing the MAX6722UTVHD3 datasheet, MAX6722UTVHD3 pinout, MAX6722UTVHD3 application, or MAX6722UTVHD3 equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temp), ultra-low 14 µA typical supply current at 3.6 V, immunity to sub-20 µs VCC transients, and compatibility with 1.8 V/0.9 V core-I/O rail pairs in space-constrained designs.
Technical Context
This device implements two independent voltage comparators with internal hysteresis (0.5% of VTH) and a digital timeout counter triggered on any threshold violation. Its reset logic guarantees correct assertion state even during brownout conditions where VCC1 or VCC2 drops to 0.8 V, enabling robust fail-safe behavior in automotive and industrial power systems.
The MAX6722UTVHD3 integrates a manual-reset input (MR) with 50 kΩ internal pullup and glitch rejection (100 ns), plus a watchdog input (WDI) with dual-mode timing: 35 s (min) startup delay followed by 1.12 s (min) normal timeout - configurable via external signal edges and disabled when WDI floats.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 3.075 V (typ), ±1.5% over -40°C to +125°C - ensures reliable reset assertion for 3.3 V I/O rails under wide-temp operation |
| VCC2 Threshold | 1.388 V (typ), ±1.5% over -40°C to +125°C - matches common 1.2–1.5 V core supplies in FPGA/ASIC systems |
| Reset Timeout | 210 ms (min) - provides sufficient hold time for processor initialization sequences before release |
| Supply Current | 14 µA (typ) at 3.6 V - enables battery-backed monitoring in always-on subsystems without significant drain |
| Reset Output Type | Active-low push-pull - eliminates need for external pullup resistor and drives directly into µP reset pin |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| VCC Validity Limit | Reset remains valid down to VCC1 or VCC2 = 0.8 V - supports graceful shutdown during deep brownout |
Pinout & Package
Package: 6-pin SOT23 (2.9 mm × 1.6 mm × 1.1 mm, JEDEC MO-178AA).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST / RST1 | Active-low push-pull reset output referenced to VCC1; asserts low on VCC1/VCC2 undervoltage, MR low, or watchdog timeout |
| 2 | GND | Analog/digital ground reference for all comparators, timers, and output drivers |
| 3 | MR | Active-low manual-reset input with 50 kΩ internal pullup to VCC1; 1 µs minimum pulse width required |
| 4 | VCC2 | Secondary supply input (0.9 V to 3.3 V range); powers internal VCC2 comparator and RST2 logic (not used in MAX6722) |
| 5 | VCC1 | Primary supply input (1.8 V to 5.0 V range); powers entire IC and defines RST output reference |
| 6 | WDI | Watchdog input; floating disables watchdog; rising/falling edge resets 1.12 s timeout after 35 s startup window |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of 3.3 V I/O and 1.2 V core rails without external components or sequencing logic |
| Guaranteed reset validity at 0.8 V | Enables deterministic system shutdown during severe brownout - no undefined reset state below 1.0 V |
| Low-power operation | 14 µA typical ICC1 at 3.6 V allows continuous monitoring in energy-sensitive applications like remote sensors |
| Watchdog with long startup mode | 35 s initial timeout prevents false triggers during boot; transitions to 1.12 s monitoring after first WDI edge |
| Immunity to short VCC transients | Rejects <20 µs glitches per 75 mV overdrive - reduces spurious resets in noisy power environments |
Applications
| Telecom Power Sequencing | Industrial PLC Controller |
|---|---|
Use Scenario: Monitoring 3.3 V backplane I/O and 1.2 V FPGA core supplies in a carrier-grade line card with hot-swap capability. IC Role / Device Role / Timing Role: Dual-supply supervisor providing synchronized reset assertion and 210 ms hold time to ensure FPGA configuration completes before peripheral enable. Use Value: Eliminates discrete RC reset circuits and avoids race conditions between rail stabilization and processor boot sequence. | Use Scenario: Supervising redundant 24 V DC-to-3.3 V and 5 V DC-to-1.8 V power modules in a programmable logic controller with extended temperature requirements. IC Role / Device Role / Timing Role: Fault detector asserting reset on either supply collapse, with manual override via front-panel switch connected to MR pin. Use Value: Guarantees safe I/O isolation and firmware recovery at -40°C ambient without external biasing or calibration. |
| Automotive ADAS Camera Module | Medical Infusion Pump |
Use Scenario: Ensuring clean power-up of image sensor (1.8 V) and ISP (3.3 V) in a rear-view camera module exposed to engine bay temperatures. IC Role / Device Role / Timing Role: Brownout protector asserting push-pull RST to SoC reset pin; WDI unused to disable watchdog and reduce BOM count. Use Value: Meets AEC-Q100 Grade 1 (−40°C to +125°C) thermal requirements while consuming <15 µA in standby. | Use Scenario: Monitoring battery-backed 3.3 V MCU supply and 1.2 V ADC reference in a Class II medical infusion pump requiring fail-safe shutdown on low voltage. IC Role / Device Role / Timing Role: Safety-critical supervisor generating reset pulse on VCC1 drop below 3.075 V, with MR tied to emergency stop circuit. Use Value: Provides certified deterministic reset behavior down to 0.8 V VCC - critical for ISO 13485-compliant power-fail response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33DBVR | Single-supply monitor (3.3 V only); no VCC2 input; fixed 200 ms timeout; 1.6 µA quiescent current | Lacks dual-rail capability - requires separate IC for core supply monitoring | Select when only primary rail supervision is needed and ultra-low IQ (<2 µA) is mandatory |
| ADM6705ARTZ-REEL7 | Push-pull RST; VTH1 = 3.08 V (typ); 200 ms timeout; -40°C to +105°C rating; 20 µA IQ | Lower max operating temperature; higher supply current; no WDI or MR support | Choose for cost-sensitive industrial designs where 105°C suffices and watchdog/manual reset are unnecessary |
Compared with TPS3808G33DBVR and ADM6705ARTZ-REEL7, the MAX6722UTVHD3 uniquely delivers true dual-supply monitoring in one 6-pin SOT23, full -40°C to +125°C operation, and integrated MR/WDI - making it optimal for compact, high-reliability embedded systems requiring coordinated rail supervision.
Availability
MAX6722UTVHD3 is available at Aetrix Electronics and suitable for telecom power sequencing, industrial PLC controllers, and automotive ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6722UTVHD3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX6715A–MAX6729A family delivers ultra-low-voltage supervisory circuits optimized for dual/triple supply monitoring in space-constrained, high-reliability embedded systems - targeting applications where rail coordination, brownout resilience, and minimal quiescent current are critical.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6722UTVHD3?
The MAX6722UTVHD3 has a factory-trimmed VCC1 reset threshold of 3.075 V (typical), with guaranteed limits of 3.000 V (min) and 3.150 V (max) over -40°C to +125°C. This value is encoded in the "TV" suffix per Maxim's Reset Voltage Threshold Suffix Guide and applies specifically to the MAX6722 variant within the MAX6715A–MAX6729A family.
Does the MAX6722UTVHD3 support monitoring a third voltage rail?
No, the MAX6722UTVHD3 does not support triple-voltage monitoring. It is a dual-supply supervisor with dedicated VCC1 and VCC2 inputs. Models like MAX6723A–MAX6727A add the RSTIN pin for adjustable third-rail monitoring; the MAX6722UTVHD3 omits RSTIN and PFI/PFO functions entirely.
What is the function of the WDI pin on the MAX6722UTVHD3?
The WDI (Watchdog Input) pin on the MAX6722UTVHD3 enables optional watchdog functionality: if left unconnected, the watchdog is disabled. When driven, it must receive a rising or falling edge at least every 1.12 s (min) after the initial 35 s startup window to prevent reset assertion. The MAX6722UTVHD3 includes this pin but does not require its use.
Can the MAX6722UTVHD3 operate with VCC2 below 1.0 V?
No - the MAX6722UTVHD3 specifies VCC2 operation from 0.9 V to 3.3 V per datasheet Electrical Characteristics. While reset logic remains valid down to VCC1 or VCC2 = 0.8 V, the device is not characterized or guaranteed for functional operation (e.g., comparator accuracy, timeout timing) below 0.9 V on VCC2. For sub-0.9 V monitoring, consider the MAX6723A series with RSTIN.
Is the MAX6722UTVHD3 pin-compatible with other devices in the MAX6715A–MAX6729A family?
The MAX6722UTVHD3 uses a 6-pin SOT23 package with pinout matching MAX6715A/MAX6716A/MAX6719A/MAX6720A/MAX6721A/MAX6722A variants (RST, GND, MR, VCC2, VCC1, WDI). However, feature availability differs: MAX6722UTVHD3 includes WDI but excludes RSTIN, PFI, and PFO - so PCB layout must omit those connections even if footprint is shared.
MAX6722UTVHD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.313V, 1.575V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6722UTVHD3 FAQ
1.How can I place an order for MAX6722UTVHD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6722UTVHD3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6722UTVHD3 reliable?
The price and inventory of MAX6722UTVHD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6722UTVHD3 is usually 5 days.
3.What payment methods are accepted for MAX6722UTVHD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6722UTVHD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6722UTVHD3?
MAX6722UTVHD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6722UTVHD3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6722UTVHD3?
For technical support, including MAX6722UTVHD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6722UTVHD3 requirements.
6.How does Aetrix verify that MAX6722UTVHD3 is sourced from the original manufacturer or authorized distributors?
All MAX6722UTVHD3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6722UTVHD3 meets industry standards.
7.What is the process for return or replacement of MAX6722UTVHD3?
All MAX6722UTVHD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6722UTVHD3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6722UTVHD3 part is unused and in its original packaging.
Return procedure for MAX6722UTVHD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6722UTVHD3 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
